20871690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5231}}^1$

素因数の和:5267

約数の個数: 64

約数和(自身を含む): 60272640

約数和(自身を除く): 39400950

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990, 5231, 10462, 15693, 26155, 31386, 36617, 52310, 73234, 78465, 99389, 109851, 156930, 183085, 198778, 219702, 298167, 366170, 496945, 549255, 596334, 695723, 993890, 1098510, 1391446, 1490835, 2087169, 2981670, 3478615, 4174338, 6957230, 10435845, 20871690]

約数ペア:

[(1, 20871690), (2, 10435845), (3, 6957230), (5, 4174338), (6, 3478615), (7, 2981670), (10, 2087169), (14, 1490835), (15, 1391446), (19, 1098510), (21, 993890), (30, 695723), (35, 596334), (38, 549255), (42, 496945), (57, 366170), (70, 298167), (95, 219702), (105, 198778), (114, 183085), (133, 156930), (190, 109851), (210, 99389), (266, 78465), (285, 73234), (399, 52310), (570, 36617), (665, 31386), (798, 26155), (1330, 15693), (1995, 10462), (3990, 5231)]